Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Scary metal statues adorn some of the signature buildings of Burlington, Vermont.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

These mysterious petroglyphs in Vermont reflect a troubled history in the treatment of Native American culture.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The castle where the Marquis de Sade lived out his darkest fantasies.

Former villa and estate of James Deering developed to preserve native tropical forests.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Home to the deepest rift anywhere on Earth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A trompe-l'oeil statue honoring the first guide dog in North America.

A world-class collection of mechanical musical instruments and automata.

The cave where two British judges hid in exile after sentencing the king to death.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

A diverse, expansive nature preserve in northeastern Kansas.

No two pieces are exactly the same at Portland's hippo-themed hardware store.

World's only nuclear reactor operated by liberal arts undergraduates.

Tiny horses tethered to antique rings are scattered around the city.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

A sculpture of a salmon swimming through a brick building.